Print DropDown Menu in Selenium + MouseOver in Selenium

How should we print DropDown Menu list which appear on MouseOver?

Sample Code:

// Open Browser

WebDriver driver = new FirefoxDriver();

// Open WebSite

driver.get("http://www.amazon.in/");

// WebElement os 'Shop By Category'

WebElement shopBy = driver.findElement(By.xpath(".//*[@id='nav-link-shopall']/span[2]"));// Actions as we have to do mouse event .. Need to move mouse over to 'Shop By Category'.

Actions actions = new Actions(driver);

actions.moveToElement(shopBy).build().perform();

// Runtime, we get all Navigation element, so if any new element added then also we can get that element in print list.

List<WebElement> navigations = driver.findElements(By.xpath("//*[@id='nav-flyout-shopAll']/div[@class='nav-template nav-flyout-content nav-tpl-itemList']/span[@role='navigation']/span[@class='nav-text']"));

for(WebElement navigation : navigations)

System.out.println(navigation.getText());

// Close Browser

driver.close();